I just went on a journey looking at different local music players.
Just tried Rhythmbox. It's not terrible, but not great either. It looks very bare bones.
Of the ones I've tried, I like Elisa the best. I spent a ton of time getting HQ artwork and quality metadata on my files and Elisa really shows that off. Rhythmbox barely shows any artwork. I just have two complaints about Elisa. First, Qt apps just don't feel right in Gnome for various reasons: fonts are often too thick, icon contrast is bad, and Qt theme is weird for non-Breze. It also has weird scrolling behavior: it has forced scrolling smoothing and acceleration.
Runner up is Sayonara. It's Qt based, but actually feels decent in Gnome. Overall I like the UI more than Elisa, but unfortunately it doesn't handle showing my library as well. Artwork is duplicated (it shows albums multiple times if songs in them have different years) and some artwork is inexplicably missing.